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130 lines
3.2 KiB
130 lines
3.2 KiB
6 years ago
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#! /usr/bin/env python
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import matplotlib.pyplot as plt
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from selfdrive.controls.lib.lateral_mpc import libmpc_py
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from selfdrive.controls.lib.drive_helpers import MPC_COST_LAT
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import math
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libmpc = libmpc_py.libmpc
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libmpc.init(MPC_COST_LAT.PATH, MPC_COST_LAT.LANE, MPC_COST_LAT.HEADING, 1.)
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cur_state = libmpc_py.ffi.new("state_t *")
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cur_state[0].x = 0.0
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cur_state[0].y = 0.0
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cur_state[0].psi = 0.0
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cur_state[0].delta = 0.0
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mpc_solution = libmpc_py.ffi.new("log_t *")
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xx = []
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yy = []
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deltas = []
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psis = []
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times = []
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curvature_factor = 0.3
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v_ref = 1.0 * 20.12 # 45 mph
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LANE_WIDTH = 3.7
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p = [0.0, 0.0, 0.0, 0.0]
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p_l = p[:]
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p_l[3] += LANE_WIDTH / 2.0
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p_r = p[:]
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p_r[3] -= LANE_WIDTH / 2.0
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l_poly = libmpc_py.ffi.new("double[4]", p_l)
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r_poly = libmpc_py.ffi.new("double[4]", p_r)
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p_poly = libmpc_py.ffi.new("double[4]", p)
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l_prob = 1.0
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r_prob = 1.0
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p_prob = 1.0
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for i in range(1):
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cur_state[0].delta = math.radians(510. / 13.)
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libmpc.run_mpc(cur_state, mpc_solution, l_poly, r_poly, p_poly, l_prob, r_prob,
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curvature_factor, v_ref, LANE_WIDTH)
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timesi = []
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ct = 0
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for i in range(21):
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timesi.append(ct)
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if i <= 4:
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ct += 0.05
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else:
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ct += 0.15
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xi = list(mpc_solution[0].x)
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yi = list(mpc_solution[0].y)
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psii = list(mpc_solution[0].psi)
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deltai = list(mpc_solution[0].delta)
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print("COST: ", mpc_solution[0].cost)
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plt.figure(0)
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plt.subplot(3, 1, 1)
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plt.plot(timesi, psii)
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plt.ylabel('psi')
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plt.grid(True)
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plt.subplot(3, 1, 2)
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plt.plot(timesi, deltai)
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plt.ylabel('delta')
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plt.grid(True)
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plt.subplot(3, 1, 3)
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plt.plot(timesi, yi)
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plt.ylabel('y')
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plt.grid(True)
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plt.show()
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#### UNCOMMENT TO CHECK ITERATIVE SOLUTION
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####
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####for i in range(100):
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#### libmpc.run_mpc(cur_state, mpc_solution, l_poly, r_poly, p_poly, l_prob, r_prob,
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#### curvature_factor, v_ref, LANE_WIDTH)
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#### print "x", list(mpc_solution[0].x)
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#### print "y", list(mpc_solution[0].y)
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#### print "delta", list(mpc_solution[0].delta)
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#### print "psi", list(mpc_solution[0].psi)
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#### # cur_state[0].x = mpc_solution[0].x[1]
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#### # cur_state[0].y = mpc_solution[0].y[1]
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#### # cur_state[0].psi = mpc_solution[0].psi[1]
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#### cur_state[0].delta = radians(200 / 13.)#mpc_solution[0].delta[1]
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####
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#### xx.append(cur_state[0].x)
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#### yy.append(cur_state[0].y)
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#### psis.append(cur_state[0].psi)
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#### deltas.append(cur_state[0].delta)
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#### times.append(i * 0.05)
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####
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####
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####def f(x):
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#### return p_poly[0] * x**3 + p_poly[1] * x**2 + p_poly[2] * x + p_poly[3]
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####
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####
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##### planned = map(f, xx)
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##### plt.figure(1)
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##### plt.plot(yy, xx, 'r-')
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##### plt.plot(planned, xx, 'b--', linewidth=0.5)
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##### plt.axes().set_aspect('equal', 'datalim')
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##### plt.gca().invert_xaxis()
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####
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##### planned = map(f, map(float, list(mpc_solution[0].x)[1:]))
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##### plt.figure(1)
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##### plt.plot(map(float, list(mpc_solution[0].y)[1:]), map(float, list(mpc_solution[0].x)[1:]), 'r-')
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##### plt.plot(planned, map(float, list(mpc_solution[0].x)[1:]), 'b--', linewidth=0.5)
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##### plt.axes().set_aspect('equal', 'datalim')
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##### plt.gca().invert_xaxis()
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####
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####plt.figure(2)
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####plt.subplot(2, 1, 1)
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####plt.plot(times, psis)
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####plt.ylabel('psi')
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####plt.subplot(2, 1, 2)
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####plt.plot(times, deltas)
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####plt.ylabel('delta')
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####
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####
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####plt.show()
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